Work-holder attachment for lathe-chucks.



W.'WEBB'& w. W. HILDRETH. WORK HOLDER ATTACHMENT FOR LATHE OHUGKS.APPLIOATION FILED FEB. 21, 1908.

91 73387. Patented Apr. 6, 1909.

WJTNESSES: I 7 I VE TORQ- W flWMwMMw B Y x v W Affohzey WILLIAM WEBB ANDWARNIE W. HILDRETH, OF GLOVERSVILLE, NEW YORK.

WORK-I-IOLDER ATTACT-HIENT FOR LATHE-CHUCKS.

Application filed. February 21, 1908.

To all whom it may concern:

Be it known that we, WILLIAM ass and vi Armin VJ. HiLnnrrrn, citn the ofthe United States residing at Gloversville in the I 1 7 n Y vf county ofhulton and otate of liew iorh',

the followin to be fell clear and exact description of tireiIlJclliiOl'l, such will enable others skilled in nch it agopertains tomake and Leo the same, reference being had to the acco ian ing drawings, and to the letters of r erence nia 'ed thereon, which form a "partof this sneer reation.

This invention relates to new and useful improvements in attachments forlathcs and conrp-rises a work-holder esigned to be detachably held upona lathe chu i means whereby a finished niece of work rna be held. by thedevice without niarring the same.

T ie invention comprises v "ions details of construction, combinationsand arrangc inents of parts, which will be hereinafter fully describedand then s -eci'i'ically defined in the appended claim.

Our invention is illustrated in the accompanying drawings, in whichFigure l is a plan view showing our improved worl-sholdor as applied tothe chuclts thereof, and Fig. 2 is a detail perspective of one of thework holding devices.

' teferencc now being had to the details of the drawings by letter, Adesignates a chuck; adapted to be attached to the spindle of a lathe andhaving the l3 over each of which one of our improved worli holdingdevices is designed to he held.

In Fig. 1 of the drawings, we have illustrated four of the worleholdcrs, one adapted to each of the jaws and each holder C011lprises aclip D which is bent to form two wings which are designed to engagefrictionally the opposite sides of a aw B, said wings being sufficientlyresilient to securely retain the holder in place.

Specification of Letters Patent.

Patented April 6, 1909.

Serial No. 417,148.

E designates a metallic plate which is fastened in any suitable mannerto said spring and is provided with a dove-tailed recess E designed toreceive the block H made of any suitable material, such as brass, fiberor censor, the latter mentioned nietal proving v satisfactory. Saidblock, it will be noted ireon reference to the drawings, has itsopposite edges beveled and designed to have dove-tail connections withthe block in which it is securely held by friction.

i l/lien it is desired to adjust the workholders upon the chucks, thespring clips are made to engage jaws of the chucks in the manner shownin Fig. 1 of the drawings, leaving four contact blocks H for engagementwith the article to be held. When the worlr-holeers are not in use, theymay be removed, as will be readily understood.

FY0111 the foregoing, it will be noted that, by the provision of thework holding devices s shown and described, a simple and efficient meansis afforded for attachment to the jaws of the chucks of a lathe wherebyfinished \VOl'li may be held in the lathe with out rnarring, bruising orinjuring in any way the article held while boring or turning with. thelathe.

.Jhat we claim to be new is A work-holder for lathcs comprising ametallic plate provided with a dove-tailed recess, a wear blocl; havingdove-tail connection therewith, the outer face of said block extendingbe ond the recessed faces of the plate, a resilient cli'o fastened tosaid plate and adapted to frictionally engage opoosite faces only of thejaw of a lathe chuck, as set forth.

in testimony whereof we hereunto affix our gnatures in the. presence oftwo witnesser.

l VILLIAEE WEBB. RVARNIE Ti". ilILllRE'lllri.

itnesses:

ALBERT rlnn'rz, WILLIAM; A. lVlAODONALD.

